Key points for the operation of aviation piston engines in damp environments

When an aviation piston engine operates in a humid environment, the following points need to be particularly noted to ensure its normal operation and extend its service life:

First, moisture-proofing and dehumidification

Sealing and ventilation

Pay attention to the sealing of each cable connection to prevent moisture from entering.

After the rain, ventilate and dry the engine in time to remove the moisture inside.

Desiccant usage

Place desiccants inside the engine and in storage containers to absorb moisture and keep the environment dry.

Replace the desiccant regularly to ensure its moisture absorption effect.

Second, check the ignition system

Detailed inspection

After flying in a humid environment, a detailed inspection of the ignition system should be carried out to ensure that there is no residual moisture.

If moisture is found, it should be thoroughly removed to prevent the ignition system from getting damp and causing malfunctions.

Moisture-proof treatment

When the engine is parked for a long time or working in a humid environment, moisture-proof treatment should be carried out on the ignition system, such as applying moisture-proof oil or using moisture-proof bags for packaging.

Third, maintenance of the lubricating oil system

Type and inspection of lubricating oil

Use lubricating oil of the model and specification that conforms to the manual and ensure the quality of the lubricating oil.

Regularly check if there are metal particles or other impurities in the lubricating oil. If necessary, clean the lubricating oil system.

Lubricating oil pressure monitoring

Monitor the lubricating oil pressure to ensure it is within the normal range.

If abnormal lubricating oil pressure is found, the fault should be checked and eliminated in time.

Fourth, maintenance of magneto-motor switches

Regular inspection and lubrication

Regularly inspect the rotating shaft and contact points of the magneto-motor switch, and lubricate them if necessary.

Prevent the generation of metal shavings due to the wear of the rotating shaft and contact points, which may cause short circuits or failures in the circuit.

Moisture-proof treatment

Moisture-proof treatment should be carried out on the magneto-motor switch, such as applying moisture-proof oil or packaging it in moisture-proof bags.

Fifth, engine oil seals and unsealing

Oil seal treatment

When the engine is parked for a long time or in a damp environment, use an anti-rust mixture to cover the exposed metal parts inside and outside the engine to form a protective oil film, preventing the metal from coming into contact with moisture.

Apply anti-rust agents to key parts such as exhaust ports, air inlets and the interior of cylinders to prevent rusting.

Unsealing procedure

Before unsealing the engine, carefully inspect the exterior and interior of the engine for any rust marks.

Drain the oil seal oil, clean the lubricating oil filter screen and lubricating oil filter, and ensure that the lubricating oil system is clean.

Carefully inspect all components of the engine to ensure they are in good condition. If necessary, replace or repair them.

Sixth, other matters needing attention

Regular inspection and maintenance

Regularly conduct a comprehensive inspection of the engine to ensure that all components are in good condition.

Maintain the engine in accordance with the requirements of the maintenance manual to extend its service life.

Environmental adaptability

When working in a humid environment, special attention should be paid to the environmental adaptability of the engine.

If necessary, modify or upgrade the engine to enhance its moisture resistance.

In summary, when an aviation piston engine operates in a humid environment, special attention should be paid to moisture-proofing, dehumidification, ignition system inspection, lubricating oil system maintenance, magneto-motor switch maintenance, as well as engine oil seal and unsealing. The implementation of these measures helps ensure the normal operation of the engine in a humid environment and extend its service life.